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The Astronomersjohn
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04:18
04:18
04:18

What is the Higgs Boson? Has it been discovered yet?

http://www.facebook.com/ScienceReason ... John Ellis, theoretical physicist: What is the Higgs Boson? Has it been discovered yet? CERN experiments observe particle consistent with long-sought Higgs boson. --- Please subscribe to Science & Reason: • http://www.youtube.com/Best0fScience • http://www.youtube.com/ScienceTV • http://www.youtube.com/FFreeThinker • http://www.youtube.com/RationalHumanism --- "It's hard not to get excited by these results," said CERN Research Director Sergio Bertolucci. "We stated last year that in 2012 we would either find a new Higgs-like particle or exclude the existence of the Standard Model Higgs. With all the necessary caution, it looks to me that we are at a branching point: the observation of this new particle indicates the path for the future towards a more detailed understanding of what we're seeing in the data." The results presented today are labelled preliminary. They are based on data collected in 2011 and 2012, with the 2012 data still under analysis. Publication of the analyses shown today is expected around the end of July. A more complete picture of today's observations will emerge later this year after the LHC provides the experiments with more data. The next step will be to determine the precise nature of the particle and its significance for our understanding of the universe. Are its properties as expected for the long-sought Higgs boson, the final missing ingredient in the Standard Model of particle physics? Or is it something more exotic? The Standard Model describes the fundamental particles from which we, and every visible thing in the universe, are made, and the forces acting between them. All the matter that we can see, however, appears to be no more than about 4% of the total. A more exotic version of the Higgs particle could be a bridge to understanding the 96% of the universe that remains obscure. "We have reached a milestone in our understanding of nature," said CERN Director General Rolf Heuer. "The discovery of a particle consistent with the Higgs boson opens the way to more detailed studies, requiring larger statistics, which will pin down the new particle's properties, and is likely to shed light on other mysteries of our universe." Positive identification of the new particle's characteristics will take considerable time and data. But whatever form the Higgs particle takes, our knowledge of the fundamental structure of matter is about to take a major step forward. • http://press.web.cern.ch/press/PressReleases/Releases2012/PR17.12E.html --- Tags: higgs boson cern lhc atlas experiments found observed new fundamental particle physics standard model forces universe properties mysteries data july 2012 .

Channels: Physics 

Added: 1866 days ago by Ordonomundi

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11:22
11:22
11:22

Particle Hunt: 'Higgs boson discovery historical moment'

Scientists are hopeful they're closer to solving life's greatest mysteries after discovering what's known as the 'God particle' The European Center for Nuclear Research says it's the most anticipated find in a decade. RT talks to physicist Andrey Golutvin to explore the significance. RT LIVE http://rt.com/on-air Subscribe to RT! http://www.youtube.com/subscription_center?add_user=RussiaToday Like us on Facebook http://www.facebook.com/RTnews Follow us on Twitter http://twitter.com/RT_com Follow us on Google+ http://plus.google.com/b/102728491539958529040 RT (Russia Today) is a global news network broadcasting from Moscow and Washington studios. RT is the first news channel to break the 500 million YouTube views benchmark.

Channels: Physics 

Added: 1866 days ago by Ordonomundi

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09:51
09:51
09:51

Galileo Galilei | Joseph Losey | 1974

http://pejino.com/ ...Blog de Cine - Galileo (La vida de Galileo) - Galileo - Joseph Losey - Topol - Edward Fox - John Gielgud - Tom Conti - James Aubrey - Colin Blakely - Robert Bridges - Tom Chatto - Georgia Brown - Patrick Magee - Michael Lonsdale - Henry Woolf - Eclesiastés 1:5 - Proverbios 11:26 - Proverbios 14:3 - Proverbios 14:4 - Proverbios 16:32 - Proverbios 17:22 - Proverbios 6:28 - Reino Unido - 1974

Channels: The Astronomers 

Added: 1909 days ago by Ordonomundi

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14:47
14:47
14:47

Wandering Stars: a tour of the planets

A beauteous rip through the solar sytem, based on NASA's Science on a Sphere program "The Wanderers." In ancient times, humans watched the skies looking for clues to their future and to aid in their very survival. They soon observed that some stars were not fixed, but moved in the sky from night to night. They called these stars the wanderers. At the center of our solar system is the sun, binding the planets with its gravitational pull. From our viewpoint on earth, the sun appears small in the sky, but in reality it dwarfs even Jupiter, the largest planet in the solar system. The distance from the sun to the small worlds traveling it are vast. Light takes eight minutes to reach earth, and nearly a day to reach the farthest known bodies. Join us now as we tour our solar system, starting with sun-baked mercury and traveling to the remotest outskirts, where small, icy bodies move with only the faintest connection to our sun. Mercury Mercury, the closest planet to Sun is also the smallest terrestrial planet. It orbits so swiftly that its year lasts only 88 Earth days. The airless cratered surface could almost be mistaken for our moon, relentlessly bombarded by meteoroids for four and a half billion years. One of these encounters left a giant scar called the golarus basin, one of the largest impact sights in the solar system. Temperatures on the surface of mercury can reach a blistering 800 degrees Fahrenheit, and can dip to 300 degrees below zero on the night side. Venus Venus, as seen from Earth, is the brightest object in sky after the Sun and Moon. Russian probes were the first to land on Venus in the 1970's and 1980's. Venus's surface is volcanic. Its atmosphere is composed of thick, dense carbon dioxide with sulfuric acid clouds. Both are potent greenhouse gases that trap incoming sunlight. Venus rotates slowly—one Venusian day lasts almost four Earth months. Earth Earth is the only planet with life as we know it. The atmosphere and temperatures are "just right" for life. It is the only known body in our solar system where water can exist as a gas, liquid, and solid. Vast oceans dominate surface of the planet. Seasonal changes occur on the surface. Earth has a solid surface that constantly shifts due to plate tectonics. Mars Once geologically active, Mars has the largest dormant volcano in the solar system, Olympus Mons. It also hast the longest valley in the solar system, called Valles Marineris. Mars has a thin, atmosphere primarily composed of carbon dioxide. Surface conditions are dynamic. Mars has seasons as well as massive dust storms that cover the planet. Its surface features include the smooth, low-lying northern hemisphere and the craggy, heavily-cratered southern uplands. Evidence suggests that Mars had water running on its surface at some time in the past. Asteroid belt The asteroid belt is composed of small rocky pieces. The big question is "What happened here?" and "Why no planets?" The asteroid Ceres is large enough to be classified as a dwarf planet. Jupiter Jupiter is the largest and most massive planet in the Solar System. It rotates rapidly, completing one rotation every 10 hours. Long-lasting, high-speed winds and storms dominate Jupiter's atmosphere. Jupiter has a faint planetary ring system and over 63 moons. The largest moons, discovered by Galileo in 1610, vary widely. Io is volcanically active. Europa's cracked surface likely hides an ocean below. Ganymede is the largest moon in the Solar System. Callisto is heavily cratered. Saturn Saturn's seemingly serene atmosphere hides powerful storms and winds on its surface. Saturn is known for its extensive ring system made of chunks of ice, rock, and dust with small moonlets embedded within the rings. Saturn has more than 60 moons. Conditions vary among the moons. Titan, the largest moon, has a thick, smoggy, atmosphere covering its icy surface with lakes of liquid methane or ethane. Small Enceladus has water and ice geysers at its south pole. Its water vapor coat other nearby moons and create a thin Saturn ring. Uranus Uranus receives 400 times less sunlight than Earth. Uranus lies nearly sideways, making its axis nearly parallel to the plane of the Solar System. This extreme tilt give rise to seasons that last nearly 28 Earth years. Uranus as many moons and a faint ring system. It has only been visited by one spacecraft, Voyager 2, in 1986. Like the other giant planets, Uranus's atmosphere is primarily hydrogen and helium with a trace of methane gas over deep clouds, giving it a pale blue-green tint. Neptune Neptune also has many moons and a faint ring system. Its Great Dark Spot, a large storm with extremely strong winds, disappeared in the 1990s. Neptune's vivid blue color is due to its frigid temperature: -371°F (-224 °C).

Channels: Planetary science 

Added: 1966 days ago by deek

Views: 749 | Comments: 0

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09:43
09:43
09:43

Towards a Spin Foam Model of Quantum Gravity

NOTE: pdf link for transparencies- http://math.ucr.edu/home/baez/loops05/loops05.pdf Probably not everyones cup of tea. A clip from a lecture by John Baez in conjunction with the LOOPS 'O5 series by the Max Planck Institute of Gravitation (Albert Einstein Institute) regarding a proposal for quantum gravity (the clip appears to start at page 14 of the transparencies). Date- 11th Oct 05. Source- http://math.ucr.edu/home/baez/loops05/ LOOPS '05- http://loops05.aei.mpg.de/ 'Spin foam models include several different classes of physical theories: lattice gauge theories, dynamical triangulation models of quantum gravity, "chain mail" quantum field theories, and topological string theories. Is there a spin foam model of quantum gravity in 4 dimensions? To address this question, we review recent work on causal dynamical triangulations and the renormalization group. This suggests that quantum gravity is a well-defined theory with the curious property that spacetime is effectively 4-dimensional at large distance scales, but 2-dimensional at very short distance scales. This is just what one might expect from a spin foam model, since spacetime is fundamentally 2-dimensional in these theories. We discuss properties a spin foam model should have in order to approximate general relativity at large distance scales.'

Channels: Major questions in astronomy 

Added: 2844 days ago by deek

Views: 821 | Comments: 0

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54:31
54:31
54:31

John Mather '68 on the History of the Universe

John Mather's "Humble Arrogance": http://www.swarthmore.edu/x6859.xml 2006 Nobel Prize: http://nobelprize.org/nobel_prizes/physics/laureates/2006/ Goddard Space Flight Center: http://www.nasa.gov/centers/goddard/home/ Nobel Laureate John Mather '68 tells the story of how the universe began with a Big Bang, how it could have produced an earth where sentient beings can live, and how those beings are discovering their history. Mather, co-recipient of the 2006 Nobel Prize in Physics for providing increased support for the Big Bang theory of the universe, is a senior astrophysicist at NASA's Goddard Space Flight Center. He includes in his talk, the 2007 McCabe Lecture, Einstein's biggest mistake, how Edwin Hubble discovered the expansion of the universe, and NASA's plans for the next great telescope in space, the James Webb Space Telescope.

Channels: The Astronomers 

Added: 2847 days ago by deek

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03:34
03:34
03:34

Carl Sagan - 'A Glorious Dawn' ft Stephen Hawking (Cosmos Remixed)

My own musical tribute to two great men of science. Carl Sagan and his cosmologist companion Stephen Hawking present: A Glorious Dawn - Cosmos remixed. Almost all samples and footage taken from Carl Sagan's Cosmos and Stephen Hawking's Universe series. RIP Dr. Sagan, you will be missed!! Please, click HQ to watch in better quality. Go here to download the track: http://www.symphonyofscience.com And here for another scientist remix: http://www.youtube.com/watch?v=XGK84Poeynk And my website for more original music: http://www.colorpulsemusic.com/ Enjoy!! -John boswelj3@gmail.com Lyrics: [Sagan] If you wish to make an apple pie from scratch You must first invent the universe Space is filled with a network of wormholes You might emerge somewhere else in space Some when-else in time The sky calls to us If we do not destroy ourselves We will one day venture to the stars A still more glorious dawn awaits Not a sunrise, but a galaxy rise A morning filled with 400 billion suns The rising of the milky way The Cosmos is full beyond measure of elegant truths Of exquisite interrelationships Of the awesome machinery of nature I believe our future depends powerfully On how well we understand this cosmos In which we float like a mote of dust In the morning sky But the brain does much more than just recollect It inter-compares, it synthesizes, it analyzes it generates abstractions The simplest thought like the concept of the number one Has an elaborate logical underpinning The brain has its own language For testing the structure and consistency of the world [Hawking] For thousands of years People have wondered about the universe Did it stretch out forever Or was there a limit From the big bang to black holes From dark matter to a possible big crunch Our image of the universe today Is full of strange sounding ideas [Sagan} How lucky we are to live in this time The first moment in human history When we are in fact visiting other worlds The surface of the earth is the shore of the cosmic ocean Recently we've waded a little way out And the water seems inviting --------------------------------------- Watch Cosmos for free on Hulu: http://www.hulu.com/cosmos Carl Sagan's Mii Character #(for Wii): 6774-1898-8986

Channels: The Astronomers 

Added: 2848 days ago by deek

Views: 1016 | Comments: 0

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